Home / 208,368.21-287,547.87-112,875.30

Finding the Fourth Proportional to 208,368.21, 287,547.87 and 112,875.30

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Solution

The fourth proportional to 208,368.21, 287,547.87 and 112,875.30 is: 155,767.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,368.21 : 287,547.87 = 112,875.30 : x
  2. Step 2: Convert to fraction form
    208,368.21/287,547.87 = 112,875.30/x
  3. Step 3: Cross multiply
    208,368.21x = 287,547.87 × 112,875.30
  4. Step 4: Simplify right side
    208,368.21x = 32,457,052,090.61
  5. Step 5: Solve for x
    x = 32,457,052,090.61/208,368.21
  6. Step 6: Final answer
    x = 155,767.77

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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.