Home / 145,300.86-217,545.24-78,501.63

Finding the Fourth Proportional to 145,300.86, 217,545.24 and 78,501.63

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Solution

The fourth proportional to 145,300.86, 217,545.24 and 78,501.63 is: 117,533.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,300.86 : 217,545.24 = 78,501.63 : x
  2. Step 2: Convert to fraction form
    145,300.86/217,545.24 = 78,501.63/x
  3. Step 3: Cross multiply
    145,300.86x = 217,545.24 × 78,501.63
  4. Step 4: Simplify right side
    145,300.86x = 17,077,655,938.74
  5. Step 5: Solve for x
    x = 17,077,655,938.74/145,300.86
  6. Step 6: Final answer
    x = 117,533.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.