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Finding the Fourth Proportional to 154,012.68, 212,535.36 and 86,030.76

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Solution

The fourth proportional to 154,012.68, 212,535.36 and 86,030.76 is: 118,721.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,012.68 : 212,535.36 = 86,030.76 : x
  2. Step 2: Convert to fraction form
    154,012.68/212,535.36 = 86,030.76/x
  3. Step 3: Cross multiply
    154,012.68x = 212,535.36 × 86,030.76
  4. Step 4: Simplify right side
    154,012.68x = 18,284,578,547.67
  5. Step 5: Solve for x
    x = 18,284,578,547.67/154,012.68
  6. Step 6: Final answer
    x = 118,721.25

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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.