Home / 105,127.93-145,095.35-62,689.20

Finding the Fourth Proportional to 105,127.93, 145,095.35 and 62,689.20

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Solution

The fourth proportional to 105,127.93, 145,095.35 and 62,689.20 is: 86,522.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,127.93 : 145,095.35 = 62,689.20 : x
  2. Step 2: Convert to fraction form
    105,127.93/145,095.35 = 62,689.20/x
  3. Step 3: Cross multiply
    105,127.93x = 145,095.35 × 62,689.20
  4. Step 4: Simplify right side
    105,127.93x = 9,095,911,415.22
  5. Step 5: Solve for x
    x = 9,095,911,415.22/105,127.93
  6. Step 6: Final answer
    x = 86,522.31

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1.5x scale

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.