Home / 190,931.80-286,397.70-146,781.40

Finding the Fourth Proportional to 190,931.80, 286,397.70 and 146,781.40

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Solution

The fourth proportional to 190,931.80, 286,397.70 and 146,781.40 is: 220,172.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,931.80 : 286,397.70 = 146,781.40 : x
  2. Step 2: Convert to fraction form
    190,931.80/286,397.70 = 146,781.40/x
  3. Step 3: Cross multiply
    190,931.80x = 286,397.70 × 146,781.40
  4. Step 4: Simplify right side
    190,931.80x = 42,037,855,362.78
  5. Step 5: Solve for x
    x = 42,037,855,362.78/190,931.80
  6. Step 6: Final answer
    x = 220,172.10

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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.