Home / 157,255,621.52-217,013,413.15-86,689,681.49

Finding the Fourth Proportional to 157,255,621.52, 217,013,413.15 and 86,689,681.49

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Solution

The fourth proportional to 157,255,621.52, 217,013,413.15 and 86,689,681.49 is: 119,632,121.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,255,621.52 : 217,013,413.15 = 86,689,681.49 : x
  2. Step 2: Convert to fraction form
    157,255,621.52/217,013,413.15 = 86,689,681.49/x
  3. Step 3: Cross multiply
    157,255,621.52x = 217,013,413.15 × 86,689,681.49
  4. Step 4: Simplify right side
    157,255,621.52x = 18,812,823,665,357,088
  5. Step 5: Solve for x
    x = 18,812,823,665,357,088/157,255,621.52
  6. Step 6: Final answer
    x = 119,632,121.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.