Home / 157,875.18-217,870.90-86,259.64

Finding the Fourth Proportional to 157,875.18, 217,870.90 and 86,259.64

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Solution

The fourth proportional to 157,875.18, 217,870.90 and 86,259.64 is: 119,040.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,875.18 : 217,870.90 = 86,259.64 : x
  2. Step 2: Convert to fraction form
    157,875.18/217,870.90 = 86,259.64/x
  3. Step 3: Cross multiply
    157,875.18x = 217,870.90 × 86,259.64
  4. Step 4: Simplify right side
    157,875.18x = 18,793,465,400.48
  5. Step 5: Solve for x
    x = 18,793,465,400.48/157,875.18
  6. Step 6: Final answer
    x = 119,040.03

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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.